EP2595496B1 - Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes - Google Patents

Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes Download PDF

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EP2595496B1
EP2595496B1 EP11737894.3A EP11737894A EP2595496B1 EP 2595496 B1 EP2595496 B1 EP 2595496B1 EP 11737894 A EP11737894 A EP 11737894A EP 2595496 B1 EP2595496 B1 EP 2595496B1
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peptide
peptide according
formula
multimerised
branched
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EP2595496A1 (fr
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Alessandro Pini
Chiara Falciani
Luisa Bracci
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SETLANCE Srl
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K17/00—Carrier-bound or immobilised peptides; Preparation thereof
    • C07K17/02—Peptides being immobilised on, or in, an organic carrier
    • C07K17/10—Peptides being immobilised on, or in, an organic carrier the carrier being a carbohydrate
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3526—Organic compounds containing nitrogen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04—Antibacterial agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K17/00—Carrier-bound or immobilised peptides; Preparation thereof
    • C07K17/02—Peptides being immobilised on, or in, an organic carrier
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K17/00—Carrier-bound or immobilised peptides; Preparation thereof
    • C07K17/02—Peptides being immobilised on, or in, an organic carrier
    • C07K17/08—Peptides being immobilised on, or in, an organic carrier the carrier being a synthetic polymer
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
    • C07K7/04—Linear peptides containing only normal peptide links
    • C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides

Definitions

  • the instant invention refers to a peptide with strong antimicrobial activity against Gram-negative and Gram-positive bacteria and Candida strains, all the aminoacids of the peptide sequence being in D-configuration.
  • the peptide is particularly resistant to proteolysis when synthesized in the tetra-branched form where identical peptide sequences are linked together by an appropriate molecular scaffold. This form makes the peptide particularly suitable for clinical applications.
  • antibacterial peptides are components of the innate immunity of animals, including humans, plants and fungi (Zasloff, 2002). They usually consist of 6-50 amino acid residues and have a positive net charge. Cationic peptides interact selectively with anionic bacterial membranes and with other negatively charged structures such as LPS and DNA. Eukaryotic membranes, in their external layer, are normally less negatively charged than bacteria's, and, differently from bacterial membrane, they are also stabilized by cholesterol molecules. These differences are the basis of cationic peptides' specificity. The mechanism of action of cationic antimicrobial peptides is consequently due to their specific binding to bacterial membranes, which provokes cell permeation and, in some cases, metabolic pathways inhibition.
  • the peptide M33 was used and described in Pini et al., 2010 and in WO2010/038220A1 always with aminoacids in L configuration (L-M33).
  • D-M33 the synthesis of the same peptide sequence with all the aminoacids in D-configuration (D-M33) produced not only a better activity for some Gram-negative bacteria but also a strong activity against a panel of Gram-positive bacteria and fungi for which the L-M33 was not active at all.
  • This result is completely unexpected, in that substitution of L-aminoacid with their D configuration is known to increase peptide stability but the effect on peptide selectivity was not predictable.
  • D-M33 D-configuration
  • R is the peptide as claimed in claim 1 and described above
  • X is an at least bifunctional molecule (in R or S configuration if asymmetric), and:
  • the X group preferably comprises at least two functional amino groups, which are preferably provided by diaminoacids such as ornithine, nor-lysine, amino alanine or diaminopropionic acid, either alone or linked to different aminoacid residues by a peptidic bond, particularly ⁇ -Ala.
  • diaminoacids such as ornithine, nor-lysine, amino alanine or diaminopropionic acid, either alone or linked to different aminoacid residues by a peptidic bond, particularly ⁇ -Ala.
  • the X group is selected from the group consisting of aspartic acid, glutamic acid, propylene glycol, succinic acid, a diisocyanate, or N,N-bis(3-aminopropyl)-glycine (BAPG) or other dendrimeric polyamine or polyacidic molecules.
  • Dendrimeric polyamine-based scaffolds according to the invention can be prepared following the procedures described in Tam, 1988; Tam et al., 2002, Falciani et al., 2005; Stasko and Schoenfisch, 2006; Rudovsk ⁇ et al., 2006, which are herein incorporated by reference.
  • composition comprising a pharmaceutically acceptable and effective amount of the peptide as described above.
  • the composition may be in the form of an injectable solution for systemic administration, preferably in the form of an injectable solution for use as detoxifying agent for LPS neutralization, still preferably in the form of eyewash, mouth wash, ointment, aerosol, or solution for topical administration.
  • the invention peptide is advantageous compared with the already described M6 or L-M33 peptides disclosed, respectively, in EP 1 789 436 B1 and in WO 2010/038220 A1 , for its better efficacy against Gram-negative and especially for its activity against Gram-positive bacteria as shown in the following tables.
  • This crucial feature along with its very encouraging antimicrobial activity, makes D-M33 peptide an optimal candidate for the development of new antibacterial drugs for the treatment of infections caused by Gram-positive bacteria.
  • Monomeric peptide was synthesized as peptide amide by an automated synthesizer (MultiSynTech, Witten, Germany) on a Rink Amide MBHA resin (Nova Biochem) using 9-fluorenylmethoxycarbonyl (Fmoc) chemistry and O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate/1,3-diisopropylethylamine activation.
  • Branched peptide molecules (MAPs) were synthesized on Fmoc 4 -Lys 2 -Lys- ⁇ Ala Wang resin.
  • TFAcetate-acetate counter ion exchange is performed on a ionexchange resin (AG1-X8 acetate, Biorad) and the peptides are lyophilized and isolated as peptide CH 3 COO-. Identity and purity of final products was confirmed by EttanTM MALDI-TOF mass spectrometry (MS) (Amersham Biosciences).
  • MIC Minimum Inhibitory Concentration
  • Peptide MICs were determined against strains of several bacterial species, including Gram-negative and Gram-positive pathogens (Table 1 and 2).
  • Activity of tetra-branched D-M33 was retained against MDR strains with various resistance mechanisms (such as extended-spectrum beta-lactamases and carbapenemases), including MDR P. aeruginosa strains from CF patients.
  • the antimicrobial activity of tetra-branched D-M33 appeared slightly better with respect to tetra-branched L-M33 for MDR strains of Pseudomonas and one strain of Klebsiella and sensitively better respect to tetra-branched L-M33 for the two strains of Staphyloccoccus aureus reported in Table 1.
  • tetra-branched D-M33 Minimal inhibitory concentration of tetra-branched D-M33 was consequently tested against a panel of Gram-positive bacteria and fungi for which tetra-branched L-M33 was not active at concentrations below 24 ⁇ M (Table 2). Surprisingly, tetra-branched D-M33 is active against all microorganisms tested, with the better efficacy (0.35 ⁇ M) for the strains of S. epidermidis and one strain of S. capitis. MIC of 0.35 ⁇ M was never reported for tetra-branched L-M33 against Gram-negative bacteria. TABLE 2 Bacteria species and strains Features and resistances MIC D-M33 ( ⁇ M) S. pneumoniae ATCC 49619 reference strain 6 S.
  • pneumoniae 47C12 clinical isolate no resistant 12 S. pneumoniae 47D22 clinical isolate, resistant to macrolides, tetracyclin, cotrimossazole 6 S. agalactiae ATCC 13813 reference strain 1.5 S. epidermidis ATCC 14990 reference strain 0.35 S. epidermidis 4761 / 1 clinical isolate, no resistant 0.35 S. epidermidis 6154 clinical isolate, no resistant 0.35 S. capitis ATCC 27840 reference strain 0.35 S. aureus ATCC 29213 reference strain 3 S. aureus 3851 clinical isolate, intermedium resistant to vancomycin 1.5 S. aureus Fi-Fran clinical isolate, no resistant 1.5 E. faecalis ATCC 29212 reference strain 0.7 E.
  • Haemolysis of fresh human erythrocytes was determined using the method of Parpart, summarized as follows.
  • a calibration curve was constructed by suspending fresh human erythrocytes in phosphate buffer (pH 7.4, 110 mM sodium phosphate) with various concentrations of NaCl and incubated for 30 min at room temperature. Samples were centrifuged at 500 ⁇ g for 5 minutes, and haemoglobin release was monitored by measuring the absorbance of supernatants at 540 nm. The absorbance obtained with 0.1% NaCl corresponded to 100% lysis and that with 1% NaCl, to 0% lysis. Peptides dissolved in PBS were added to human erythrocyte solution at several concentrations.
  • the resulting suspension was incubated separately at 37°C for 2 h and 24 h. Release of hemoglobin was monitored by measuring the absorbance of the suspernatant at 540 nm after centrifuging and haemolysis percentage was calculated using the calibration curve.
  • Tetra-branched D-M33 peptide was analysed for its antibacterial activity in mice infected with lethal amounts of the Gram-negative bacterium E. coli or the Gram-positive bacterium S. aureus.
  • LD100 lethal infection
  • ip intra-peritoneal
  • Bacterial LD100 killed mice in 15-24 hours. Balb-c mice were infected with the LD100 of bacteria and treated 1 hour later with the peptide by ip administration.
  • D-M33 protected 100% of animals from signs of sepsis and death (seven-day survival) when administered in a single dose at a concentration of 10 mg/Kg for E. coli ( Fig. 4 ) and 25 mg/Kg for S. aureus ( Fig. 5 ). D-M33 did not produce apparent toxicity signs in animals treated ip with a peptide dose of 100 mg/Kg (not shown), 10 time the dose reported in Figure 4 and 4 times the dose of Fig. 5 .
  • D-M33 proved more stable to bacterial proteases than L-M33.
  • Figure 6 shows the incubation of both peptides with the S. aureus protease Aureolysin, which appears particularly active against L-M33 and inactive within 24 hours against D-M33.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Biochemistry (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Nutrition Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Communicable Diseases (AREA)
  • Oncology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Peptides Or Proteins (AREA)

Claims (15)

  1. Peptide antibactérien constitué de la séquence d'acides aminés KKIRVRLSA, caractérisé en ce que tous les acides aminés sont dans la configuration D.
  2. Peptide selon la revendication 1, ledit peptide étant sous forme de peptide linéaire.
  3. Peptide selon la revendication 1, ledit peptide étant multimérisé sur un squelette de polyacrylamide, sur un squelette d'unités dextrane ou sur un squelette d'unités éthylèneglycol.
  4. Peptide selon la revendication 1, ledit peptide étant multimérisé sur un échafaudage ayant la formule (1) suivante
    Figure imgb0017
     dans laquelle R représente le peptide tel que revendiqué dans la revendication 1 ; X représente une molécule au moins bifonctionnelle, et :
    m=n=0 et p=1, suite à quoi le peptide est un dimère de formule (la)
    Figure imgb0018
     ou
    m=1, p=1 et n=0, suite à quoi le peptide est un tétramère de formule (Ib)
    Figure imgb0019
     ou
    m=n=p=1, suite à quoi le peptide est un octamère de formule (Ic)
    Figure imgb0020
  5. Peptide multimérisé selon la revendication 4, dans lequel X comprend au moins deux groupes amino fonctionnels.
  6. Peptide selon la revendication 5, dans lequel X représente un acide aminé choisi parmi la lysine, l'ornithine, la nor-lysine, l'aminoalanine ou l'acide diaminopropionique, ou un dipeptide contenant un de ces acides aminés.
  7. Peptide selon la revendication 6, ledit peptide étant représenté par la formule chimique suivante :
    Figure imgb0021
  8. Peptide multimérisé selon la revendication 4, dans lequel X est choisi parmi l'acide aspartique, l'acide glutamique, le propylèneglycol, l'acide succinique, un diisocyanate, la N,N-bis(3-aminopropyl)glycine (BAPG).
  9. Peptide selon n'importe lesquelles des revendications précédentes pour une utilisation médicale.
  10. Peptide selon n'importe lesquelles des revendications précédentes en tant que médicament antibactérien.
  11. Peptide selon n'importe lesquelles des revendications précédentes pour une utilisation dans le traitement d'infections causées par des bactéries à Gram positif.
  12. Composition pharmaceutique comprenant une quantité efficace du peptide selon les revendications 1 à 8.
  13. Composition pharmaceutique selon la revendication 12, sous forme de solution injectable pour administration systémique, ou sous forme de bain oculaire, de bain de bouche, de pommade, ou de solution pour administration topique.
  14. Préparation désinfectante et/ou détergente à activité antibactérienne comprenant le peptide selon les revendications 1 à 8.
  15. Utilisation du peptide selon les revendications 1 à 8 en tant que conservateur pour produits alimentaires, cosmétiques ou homéopathiques.
EP11737894.3A 2010-07-23 2011-07-11 Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes Not-in-force EP2595496B1 (fr)

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EP10170639A EP2409579A1 (fr) 2010-07-23 2010-07-23 Peptides antimicrobiens, formes ramifiées et leur utilisation pour soigner les infections bactériennes
EP11737894.3A EP2595496B1 (fr) 2010-07-23 2011-07-11 Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes
PCT/EP2011/003446 WO2012010266A1 (fr) 2010-07-23 2011-07-11 Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes

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EP11737894.3A Not-in-force EP2595496B1 (fr) 2010-07-23 2011-07-11 Peptide antimicrobien, formes ramifiées de celui-ci et leur utilisation dans le traitement des infections bactériennes

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US11174288B2 (en) 2016-12-06 2021-11-16 Northeastern University Heparin-binding cationic peptide self-assembling peptide amphiphiles useful against drug-resistant bacteria
EP3354274A1 (fr) * 2017-01-25 2018-08-01 SETLANCE S.r.l. Compositions thérapeutiques pour le traitement des infections bactériennes
EP3392265A1 (fr) 2017-04-20 2018-10-24 SETLANCE S.r.l. Procédés d'élimination de toxines bactériennes d'un fluide biologique
SG10201805107SA (en) 2018-06-14 2020-01-30 Bark Tech Pte Ltd Vibroacoustic device and method for treating restrictive pulmonary diseases and improving drainage function of lungs
CN111454457B (zh) * 2020-06-02 2021-03-16 四川大学 一种以树状分子为侧链的手性肽类抗菌聚合物及其制备方法
CN111961118B (zh) * 2020-08-05 2022-07-26 合肥瑞克生物科技有限公司 一种抗菌活性肽

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ITRM20040349A1 (it) 2004-07-13 2004-10-13 Univ Siena Peptidi antibatterici e loro analoghi.
WO2009146885A2 (fr) * 2008-06-02 2009-12-10 Spiderbiotech S.R.L. Peptides antibactériens lipidés
CN102170899A (zh) 2008-10-05 2011-08-31 锡耶纳大学 用于抗微生物应用的肽序列、其分枝形式以及其用途

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ES2475765T3 (es) 2014-07-11
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US20130130969A1 (en) 2013-05-23
EP2409579A1 (fr) 2012-01-25
US8921308B2 (en) 2014-12-30

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